<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>注册页面</h1>
<div>
  <input type="text" v-model="user.username" placeholder="用户名">
  <input type="text" v-model="user.password" placeholder="密码">
  <input type="text" v-model="user.nickname" placeholder="昵称">
  <input type="button" value="注册" @click="reg()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script>
    let v = new Vue({
        el:"body>div",
        data:{
        user:{ username:"",password:"",nickname:""}
        },
        methods:{
          reg(){
            axios.post("/reg",v.user).then(function (response) {
                  if (response.data==1){
                    alert("注册成功！")
                    location.href="/";
                  }else {
                    alert("用户名已存在！")
                  }
            })
          }
        }


    })
</script>
</body>
</html>